Heat energy circulating system of coating production line

Abstract

The invention relates to a heat energy circulating system of a coating production line, which comprises a heating water tank of a pre-treatment system of the coating production line and a drying box of a drying facility of the coating production line, wherein a stainless steel inner container and a combustor are fixed in a furnace body; the combustor is fixed to the lower part of the stainless steel inner container; an air outlet of a circulating calorifier is communicated with the furnace body; an atmosphere communicating vent opening into atmosphere directly is arranged at the top of the furnace body; a water outlet pipe and a return pipe are arranged on the stainless steel inner container; a hot-water circulating pump is arranged on the water outlet pipe; the water outlet pipe is communicated with hot-water inlets of the heating water tank of the pre-treatment system of the coating production line and the drying box of the drying facility of the coating production line; and hot-water outlets of the heating water tank of the pre-treatment system of the coating production line and the drying box of the drying facility of the coating production line are communicated with the return pipe. The heat energy circulating system has the advantages of completely eradicating the phenomenon of the negative pressure of a loop and a water outlet pipe and solving the problems of the cavitation of the water circulating pump and the water attack of the system along with good anti-explosion performance and convenient overhauling.

Description

Technical field: [0001] The invention relates to the technical field of coating equipment, and more specifically relates to a thermal energy cycle device connected in series on a coating production line. Background technique: [0002] The coating production line mainly includes pre-treatment cleaning system (pre-processing equipment), spraying system (spraying complete set of equipment, electrostatic generator, powder spraying equipment, painting equipment, etc.), thermal cycle pre-treatment and drying facilities, paint explosion-proof equipment, etc. . [0003] During the working process of the pre-treatment cleaning system and drying facilities, a large amount of hot water is required. Generally, manufacturers use atmospheric hot water boilers to provide hot water for the cleaning system and drying facilities. The disadvantages are: [0004] 1. To ensure that the boiler is not under pressure under any conditions. It is the most important technical requirement to ensure t...

AI Technical Summary

Problems solved by technology

It is the most important technical requirement to ensure that the atmospheric pressure hot water boiler eliminates the explosion, but at present, many atmospheric pressure boilers cannot guarantee

[0005] 2. Some vertical atmospheric hot water boilers have no inspection holes in the foot ring, and scales accumulate on the foot ring, and the sediment cannot be removed

[0006] 3. There is a negative pressure problem in the circuit

When the static pressure of the heating system of the atmospheric hot water boiler is lower than the height of the system, the system has a negative pressure phenomenon, and the negative pressure of the single-point constant pressure system circuit is more serious. If the circuit operates under negative pressure, there is a possibility of inhaling air. Affect the normal operation of the circulating water pump

[0007] 4. There is a negative pressure in the outlet pipe of the furnace body

The water pressure in the outlet pipe of the boiler is the lowest point of the system pressure. If the installation position of the outlet pipe is high, the resistance loss of the outlet pipe will be large, and negative pressure will appear in the outlet pipe, which will affect the normal operation of the circulating water pump.

[0008] 5. Cavitation problem of circulating water pump

Cavitation is very harmful to the water pump, and there will be negative pressure in the outlet pipe, which will affect the normal operation of the circulating water pump

[0009] 6. System water hammer problem

Water hammer spreads along the pipe to the heat sink, causing damage

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